Move VENDOR.bazel globals to their own page

Currently `pin` and `ignore` show up in the page for MODULE.bazel globals (https://bazel.build/rules/lib/globals/module#pin). They should be in their own page instead.

PiperOrigin-RevId: 641816839
Change-Id: I923ec2e800870dd565ea3e2ba36886b5e92ba947

src/main/java/com/google/devtools/build/docgen/annot/GlobalMethods.java

@@ -32,14 +32,15 @@ enum Environment {
     ALL(
         "All Bazel files",
         "Methods available in all Bazel files, including .bzl files, BUILD, MODULE.bazel,"
-            + " and WORKSPACE."),
+            + " VENDOR.bazel, and WORKSPACE."),
     BZL(".bzl files", "Global methods available in all .bzl files."),
     BUILD(
         "BUILD files",
         "Methods available in BUILD files. See also the Build"
             + " Encyclopedia for extra <a href=\"${link functions}\">functions</a> and build rules,"
             + " which can also be used in BUILD files."),
     MODULE("MODULE.bazel files", "Methods available in MODULE.bazel files."),
+    VENDOR("VENDOR.bazel files", "Methods available in VENDOR.bazel files."),
     WORKSPACE("WORKSPACE files", "Methods available in WORKSPACE files.");
 
     private final String title;

src/main/java/com/google/devtools/build/lib/packages/VendorFileGlobals.java

@@ -27,7 +27,7 @@
 import net.starlark.java.eval.Tuple;
 
 /** Definition of the functions used in VENDOR.bazel file. */
-@GlobalMethods(environment = Environment.MODULE)
+@GlobalMethods(environment = Environment.VENDOR)
 public final class VendorFileGlobals {
   private VendorFileGlobals() {}